Dry shaver



A ril 20, 1948. H. 5:. PAGE 2,4 v

DRY SHAVER Filed Feb. 3, 1945 INVENTOR. ii 1212b E'1""t Em I :1 5 15Patented Apr. 20, 1948 TATELS PATENT V BRY- SHAVER HerhertE. :Page,Alhambra, Calif.

Application February 3, 1945, fSerial'No. 575,943 whims. (01. 30-43) Mypresent invention hasto do with powerdriven dry shavers and; insome-aspects, involves improvements upon-the electric shaver shown in myprior United States Letters Patent No. 2,355,- 672, dated August 12,19.44.

In one .of its embodiments, the device shown in my said-prior patentinvolves-:the use of two nestedconcentric; perforated, cylindricalcutter elements, the outer element' being freely rotatablesoas topermitit to be freely rolled over the skin 'ofthe-user, whilethe innerelementis powerdriven but is freely rotatable relative to the-outermember and its driving element. In operation, as the outer element isrolledover the face, the hairs 'or whiskerson the facepass through theperforations-therein and into the perforations in the inner member asthe latter register with those of=th'e'outer member, and, by movementof'the inner member relative to the outer'member, said hairs aresevered.

Insuchdevicesit is highly desira-bleto maintainfreerotatability of thecutting members relativegto each other, butat the same time it-isessential that the outer surface of the inner cutter membersufiicientlyengageagainst theinner surface of the outer member to eifect a clean cutand :provide asufiiciently close shave. The friction resulting from thelatter tends to reduce the freedom of relative rotatability'of thecutting elements and it has been-highly desirable, therefore, toovercome those difliculties-while at the same time accomplishing bothofthe desired ends.

It is anobject of the invention to provide, in a shaver utilizing afreelyerotatable outericylindrical cutting head, anda freely rotatable.driven cylindrical innerhead, means: for providing. adequate lightfrictional engagement. between the heads atthe cuttingpoint withoutdestroying or undulyzretarding .the 7 free relative .rotatability ofthegparts.

Another object is the provision of novel and eflicient means for theapplication of the driving power to the inner cutter element.

My invention possesses additional but more or less subordinate objectsand advantages which will become apparent from the following detailedexplanation of a presently preferred embodiment, it being understood, ofcourse, that within the scope of the broader claims appended hereto theinvention is capable of being embodied in other structures differingspecifically from that now to be described.

For purposes of the following description I shall refer to theaccompanying drawings, in which:

A starting wheel -l1.:is secured'zonifiangemgits peripheral edge beingaccessible: in ra'zrecess. 2 Ila provided inythecbody; for manualengagement: by

the users finger to start the motor.

Secured to the respectiveeplates J5 by .SCI'BWS [:9 there are end plates18, each of-whichha-s formed integrally therewith .;a; circularrflange.22 broken at 20, the latter flanges-.providingtbearing surfaces v forthe outer shelhtorccutting ahead. :to be vdescribed. The numeral@lltdesignatesoarcylindrical outer shell :or. cutting: head which :hashair-p ssing perforations 3i sand.- isifreelyirotate ableuponthezbearingsv provided; hyttheflanges 122.

Slidablymounted onitheetop; surface of the plates A5 I provide avyoke35scomprising a base nd end piecesin whichitheiendsaficiarez secur d tothe, base; portion 50f; .thetroke byvscrews' .36. whereby tobedetachable. rEach tb the-Tends; 35a has-a slot 38,thebottoms-oiwhichlslot-gprovides a bearingfor anend of. thIetlindledfl.vFreely rotatably mounted on each end ofithezspindle 40 thereis aspider- 41, whosalegscarry a circular ring 42.

An inner cylindrical shell or cutter head 50, presenting perforations5|, has its respective ends mounted upon the rings 42, said ends beingengaged by the extreme end portions 43 of the spider legs. Each of thespiders is held against outward movement axially of the spindle byengagement against the end members of the yoke.

The inner head 50 is of smaller exterior diameter than the innerdiameter of the outer head 30 and is eccentric relative thereto.However, the inner head is maintained in contact with the inner surfaceof the outer head at the top portion of the device by the means now tobe described.

In each of the plates I5 there is one or more vertical holes in each ofwhich is mounteda :face. :relative to'the outer head, as well asrelative to the yoke, since its supporting spiders are freely :rotatableupon the spindle 40 and spindle 40 is :rotatable in its bearings, it ispositively driven to oscillate axially by means of the yoke 35. At thecoil spring "66 atop which rests a ball 61, each of the balls beingurged outwardly against the bottom of the yoke by the spring. The yokeis thus constantly urged upwardly so that the spindle 40 which isdisposed axially of the inner head 50 is resiliently urged upwardly,carrying with it the inner head 50 until the latter contacts the innersurface of the outer head. The springs 66 are weak, however, so as notto induce too great a frictional engagement of the outer surface of theinner head with the inner surface of the outer head at the point ofcontact, being only strong enough to maintain the inner head in contactwith the outer head.

The yoke and consequently the inner head are caused to oscillaterelative to the outer head by means of the eccentric, pin l engaging ina transverse slot at the bottom of the yoke. The slot 10 also passesthrough a plate ll secured to the bottom of the yoke to relativelythicken the yoke at that point in order to insure that the pin ID willalways engage in the slot 10 despite the upward movement of the yokeaway from the pin caused by the springs 66.

From the foregoing description it will be seen that, in operation, whilethe outer head 30 is held longitudinally stationary, it-freely rotateson the flanges 22 so that, as the outer head engages the skin of theuser while the body of the device is moved, the outer head will freelyroll over the While the inner head 50 is free to rotate 'top end of therazor, which is usually the portion applied to the face, the inner headis lightly resiliently urgedagainst the inner surface of the outer headto maintain proper contact.

I claim:

1. In a power-operated shaving device, a supporting body, a pair ofperforated nested cylinders mounted on the body, the outer one of thecylinders constituting an outer cutter head and being mounted for freerolling movement relative thereto in response to movement of the bodywhen said head is in contact with the'skin, and the inner one of saidcylinders constituting an inner cutter head and being mounted to moveaxially and to rotate freely relative to the body and outer cylinder,power means cooperating with the inner cylinder to oscillate it axially,and spring means urging the inner cyliner into eccentric relationship tothe outer cylinder whereby to frictionally engage the outer surface ofthe inner-cylinder against the inner surface of the outer cylinder.

2. In a power-operated shaving device, a supporting body carrying powermeans, a perforated,

cylindrical outer cutter head mounted on the body for free rollingmovement relative thereto in response to movement of the body when saidhead is in contact with the skin, a yoke mounted on the body tooscillate relative thereto, means operatively connecting the yoke to thepower means, said yoke having upright end portions each presenting abearing, a spindle journalled at its ends in said respective bearings, aperforated cylindrical inner cutter head disposed axially in the outerhead and carried by the spindle, said spindle being disposed parallelwiththe axis of the outer head and coaxial with said inner head, andresilient means urging the spindle into eccentric relationship with theaxis of the outer head.

3. In a power-operated shaving device, a supporting body carrying powermeans, a perforated, cylindrical outer cutter head mounted on the bodyfor free rolling movement relative thereto in response to movement ofthe body when said head is in contact with the skin, a yoke mounted onthe body to oscillate relative thereto, means operatively connecting theyoke to the power means, said yoke having upright end portions eachpresenting a bearing, a spindle journalled at its ends in saidrespective bearings, a perforated cylindrical inner cutter head disposedaxially in the outer head and rotatably carried by the spindle, saidspindle being disposed parallel with the axis of the outer head andcoaxial with said inner head, and resilient means urging the spindleinto eccentric relationship with the axis of the outer head.

4. In a power-operated shaving device, a supporting body carrying powermeans, a perforated, cylindrical outer-cutter head mounted on the bodyfor free rolling movement relative thereto in response to movement ofthe body when said head is in contact with the skin, a perforated innercylindrical head mounted to reciprocate axially and to freely rotate inthe outer head, a yoke slidably carried by the body, means operativelyconnecting the yoke-to the inner head, and means operatively connectingthe yoke. to the power means.

HERBERT ELPAGE.

REFERENCES CITED I The following references are file of this patent:

UNITED STATES PATENTS of record in the Aaron -Aug." 1945

